Hydrophones
Naxys Hydrophones
The Naxys hydrophone sensor element is encased within an acoustically transparent compound, allowing omni-directional detection of audio signals at frequency ranges between 5Hz and300kHz. Signals are processed in 16-bit resolution. These instruments are pressure-rated to 3000m.
Hydrophones at Folger Deep
Hydrophone data collected from Folger deep and Barkley Canyon are used to monitor whale populations. The hydrophones are able to detect vocalizations that study the season shifts in different cetacean populations. Whale songs are detectable from 10s to 100s of kilometers away from the source (NEPTUNE Canada: An Invitation to Science).
Listen to the Deep
Acoustic readings from hydrophones at Barkley Canyon and Folger Passage have been analyzed and incorperated into the Listen to the Deep website. The 'LIDO' website was developped by researchers at Spain's Technical University of Catalonia and analyzes hydrophone data from many networks around the world. The LIDO research aims to understand organisms responses to anthropogenic sound sources and informs on long-term management of noise pollution in the oceans (NEPTUNE Canada: An Invitation to Science, 2012).
Hydrophones on the Seafloor
Naxys hydrophones have been deployed in the NEPTUNE Regional Network at Folger Deep, Barkley Canyon and the Vertical Profiler System. There are future plans to install hydrophones at Endeavour Mothra, and ODP 1027.
Barkley Canyon
Barkley Canyon Vertical Profiler System (VPS)
Naxys Ethernet Hydrophone 02345 Ti 052 at Barkley Upper Slope